Year	% of total population
1960	37.64787126600546
1961	38.112228997548854
1962	38.589065646320805
1963	39.07783172647608
1964	39.58986272257754
1965	40.10154268625848
1966	40.60482011060141
1967	41.07397446394288
1968	41.563753207298696
1969	42.05624005173615
1970	42.54182654236699
1971	43.05846979285935
1972	43.58079309796442
1973	44.01994689051661
1974	44.59480443889377
1975	45.19402110444284
1976	45.792017048482585
1977	46.351476275567194
1978	46.902713386026065
1979	47.41104795397781
1980	47.87712958248721
1981	48.37212304240966
1982	48.89392224726942
1983	49.270080150357245
1984	49.63840672127932
1985	50.02916869095657
1986	50.444115818809
1987	50.86126757318492
1988	51.26021469327154
1989	51.65343725281014
1990	52.05251788210954
1991	52.326784995730335
1992	52.497270392724715
1993	52.65017122410893
1994	52.87526194586318
1995	53.08424916879569
1996	53.264848245293905
1997	53.48443099337757
1998	53.68119025647886
1999	53.894874546315904
2000	54.117113962499715
2001	54.33772943959349
2002	54.5395892513945
2003	54.76605135626382
2004	55.03809500959625
2005	55.33692325195311
2006	55.61351286761804
2007	55.87990676987665
2008	56.17455647306502
2009	56.45959208257178
2010	56.64086806345267
2011	56.71565888067352
2012	56.83718118781738
2013	57.046243880666424
2014	57.29482485363293
2015	57.55733228730741
2016	57.822301112058106
2017	58.10786534827916
2018	58.378631327258134
2019	58.60835031311819
2020	58.76204142305578
2021	58.90330848140226
2022	59.165775490264025
2023	59.480618272565515